/*  Copyright (C) 2004 Caltech  Written by Lexing Ying*/#ifndef _NUMMAT_HPP_#define _NUMMAT_HPP_#include "fdct_usfft_inc.hpp"using std::ostream;using std::istream;using std::ios_base;FDCT_USFFT_NS_BEGIN_NAMESPACE//-------------------------------------------------template <class F>class NumMat {public:  int _m, _n;  F* _data;public:  NumMat(int m=0, int n=0): _m(m), _n(n), _data(NULL) {	 if(_m>0 && _n>0) {		_data = new F[_m*_n]; assert( _data!=NULL );	 memset(_data, 0, _m*_n*sizeof(F));	 } else		_data = NULL;  }  NumMat(const NumMat& C): _m(C._m), _n(C._n) {	 if(_m>0 && _n>0) {		_data = new F[_m*_n]; assert( _data!=NULL );	 memset(_data, 0, _m*_n*sizeof(F));	 } else 		_data = NULL;	 if(_m>0 && _n>0) {		memcpy( _data, C._data, _m*_n*sizeof(F) );	 }  }  ~NumMat() {	 if(_m>0 && _n>0) {		delete[] _data; _data = NULL; }  }  NumMat& operator=(const NumMat& C) {	 if(_m>0 && _n>0) {		delete[] _data; _data = NULL; }	 _m = C._m; _n=C._n;	 if(_m>0 && _n>0) {		_data = new F[_m*_n]; assert( _data!=NULL );	 memset(_data, 0, _m*_n*sizeof(F));	 } else		_data = NULL;	 if(_m>0 && _n>0) {		memcpy( _data, C._data, _m*_n*sizeof(F) );	 }	 return *this;  }  void resize(int m, int n)  {	 if(_m!=m || _n!=n) {		if(_m>0 && _n>0) {		delete[] _data; _data = NULL;		}		_m = m; _n = n;		if(_m>0 && _n>0) {		_data = new F[_m*_n]; assert( _data!=NULL );		memset(_data, 0, _m*_n*sizeof(F));		} else		  _data = NULL;	 }  }  const F& operator()(int i, int j) const  { 	 assert( i>=0 && i<_m && j>=0 && j<_n );	 return _data[i + j*_m];  }  F& operator()(int i, int j)  { 	 assert( i>=0 && i<_m && j>=0 && j<_n );	 return _data[i + j*_m];  }  int m() const { return _m; }  int n() const { return _n; }  F* data() const { return _data; }};//INPUTtemplate <class F> inline istream& operator>>(istream& is, NumMat<F>& mat){  int m,n; is>>m>>n;  mat.resize(m,n);  for(int i=0; i<mat.m(); i++)	 for(int j=0; j<mat.n(); j++)		is>>mat(i,j);  return is;}//OUTPUTtemplate <class F> inline ostream& operator<<(ostream& os, const NumMat<F>& mat){  os<<mat.m()<<" "<<mat.n()<<endl;  for(int i=0; i<mat.m(); i++) {	 for(int j=0; j<mat.n(); j++)		os<<" "<<mat(i,j);	 os<<endl;  }  return os;}//SET VALUEtemplate <class F> inline void setvalue(NumMat<F>& M, F val){  for(int i=0; i<M.m(); i++)	 for(int j=0; j<M.n(); j++)		M(i,j) = val;}//CLEARtemplate <class F> inline void clear(NumMat<F>& M){  memset(M.data(), 0, M.m()*M.n()*sizeof(F));}typedef NumMat<int>    IntNumMat;typedef NumMat<double> DblNumMat;typedef NumMat<cpx>    CpxNumMat;FDCT_USFFT_NS_END_NAMESPACE#endif